William Optics · Ritchey–Chrétien Telescope · 9.75-inch Ritchey-Chrétien (RC) telescope
Key specifications
Aperture
250 mm
Focal length
2000 mm
Focal ratio
f/8.0
Optical design
Ritchey-Chrétien
Weight
15.8 kg
All specifications
Focuser type
10:1 rack-and-pinion linear, 3 inch
About
A 250 mm f/8 Ritchey-Chretien on hyperbolic mirrors of 94% reflectivity, covering more than a 44 mm image circle, with a 3-inch 10:1 linear rack-and-pinion focuser. Takes the Dr. Flat Master 0.8x reducer. Sold to order in 10, 12, 14 and 16-inch apertures.
